Was Yechezkel 4:4 method of Israel's atonement simply : immobility?
The Holy One, Blessed be He, afflicts Ezekiel in order to cleanse the sins of the Jewish people. God instructed him to lie down and suffer the same number of days as the number of years that the Jewish people did not observe the halakhot of the Sabbatical Year.
"on your left side" שְׁכַב עַל־צִדְּךָ הַשְּׂמָאלִי : to bear the pain and torture [over] the number of days corresponding to the number of years that My spirit oppressed Me, so to speak, because they provoked Me, and you will atone for their iniquity since the retribution that I say I will bring upon them is painful to you.
And you shall lie on your left side, and you shall place the iniquity of the house of Israel through it; the number of the days that you shall lie on it, you will bear their iniquity. (וְאַתָּה שְׁכַב עַל־צִדְּךָ הַשְּׂמָאלִי וְשַׂמְתָּ אֶת־עֲוֹן בֵּית־יִשְׂרָאֵל עָלָיו מִסְפַּר הַיָּמִים אֲשֶׁר תִּשְׁכַּב עָלָיו תִּשָּׂא אֶת־עֲוֹנָם)
Based on Sanhedrin 39a:13 & Rashi commentary on Ezekiel 4:4, how does immobility (motionlessness) atone/cleanse national sins?